Sirius processes Regulus's death with characteristic denial, insisting his brother "wasn't family" and claiming relief at having "one less Death Eater." James provides support while Remus struggles to help Sirius through his grief. They visit Islington's Highbury Fields, where Sirius shares childhood memories with Regulus, including their first magic together. The war memorial's inscription about brave soldiers who died for their country adds poignant context to the brothers' tragic separation and Regulus's ultimate fate.